18-19高三上·上海浦东新·阶段练习
名校
1 . Lester S.Hill在1929年运用矩阵的原理发明了一种加密方法,称为希尔密码,其中每个字母均用数字来代替(
,
,…,
),一串字母就可当成
维向量,具体加密过程如下:假设明文
“
”,对a应的向量就是
,加密矩阵
,加密过程就是
,如果计算出的数字超过26,则对26取余,例如
,那么,最终的密文
就是“
”,假设加密矩阵仍为
,那么原文“
”的密文是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601a4fe4960f18539e153430f5078b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971cfcc209bdcc8281bda8daf9b0cff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1993809038f175482d29667aa9b2a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871de818e22dc3e1982ef52cccb12ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47efdd4840a02810769582ddc702491e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61329b63f75a14001b3b694700314f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be359c47e0ce9121147a9219a459344e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a23fa65a7d486f44d4887088f3fd5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d879f9c0d5015e7381dc3fee7a15f288.png)
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2 . 已知△
三个顶点的坐标分别是
.若△
在矩阵
对应的变换
作用下变为△
,其中点
变为点
.求△
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9af56076d6edfa085c1691d90bcc9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0b4546e31c3ca579b504abf72aca9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d3bfa155ad67018da4d65815c5e5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1315dc9d2212aafb7d1b9b3dd8a0986b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
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3 . 将圆
上任意一点的横坐标变为原来的
,纵坐标不变,从而得到椭圆
,则椭圆
的焦点坐标是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90af67e4c90e378ade7773722e805b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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4 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a2d37b1eda502b2a8e8acfc2e411a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2018-12-30更新
|
213次组卷
|
3卷引用:2019年上海市长宁(嘉定)区高三上学期期末质量检测(一模)数学试题
5 . 已知点
在直线
上,且点
到
、
两点的距离相等,则点
的坐标是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6fe4213905a22bd5c6fb3a35d68126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10d362b95ce7ac5b18fb4d1037fce59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266c42a10c13c00114ae371b2d9f728d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2018-12-05更新
|
655次组卷
|
5卷引用:【全国百强校】上海市复旦附中2018-2019学年高二上学期期中考试数学试题
【全国百强校】上海市复旦附中2018-2019学年高二上学期期中考试数学试题上海市松江二中2019-2020学年高二上学期期中数学试题上海市进才中学2019-2020学年高二上学期期中数学试题(已下线)专题14数学知识的延伸必考题型分类训练-1(已下线)第一篇 代数与近世代数 专题3 多项式与线性方程组
6 . 已知曲线
,先将曲线
作关于
轴的反射变换,再将所得图形绕原点顺时针旋转
.
(1)求连续两次变换所对应的变换矩阵
;
(2)求曲线
在
作用下得到的曲线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
(1)求连续两次变换所对应的变换矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d6bf3a9c48c3d16d78fa1062f08257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ef73bd07011d88bab2e4223b2631af.png)
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2018-01-18更新
|
204次组卷
|
4卷引用:2018年高考二轮复习测试专项【苏教版】专题十 选修内容
(已下线)2018年高考二轮复习测试专项【苏教版】专题十 选修内容江苏省南京市金陵中学2020届高三下学期6月考前适应性训练数学试题(已下线)江苏省如皋市2017--2018学年度高三年级第一学期教学质量调研(三)数学(理)试题江苏省无锡市天一中学2018-2019学年高二下学期期中数学(理)试题
2014高三·全国·专题练习
7 . 设矩阵M=
(其中a>0,b>0).
(1)若a=2,b=3,求矩阵M的逆矩阵M-1;
(2)若曲线C:x2+y2=1在矩阵M所对应的线性变换作用下得到曲线C′:
+y2=1,求a,b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def54b09752d088965ef5b0123789603.png)
(1)若a=2,b=3,求矩阵M的逆矩阵M-1;
(2)若曲线C:x2+y2=1在矩阵M所对应的线性变换作用下得到曲线C′:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de95471bb6c16acb4fd84d8315e6a637.png)
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2014高三·全国·专题练习
8 . 已知矩阵M=
,其中a∈R,若点P(1,-2)在矩阵M的变换下得到点P′(-4,0),求实数a的值;并求矩阵M的特征值及其对应的特征向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffc5b20b75d606aa7b12ae33faaf23a.png)
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9 . 已知曲线
,将曲线
绕坐标原点逆时针旋转
后,求得到的曲线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec2eaf6f4d809e7af9e5ac6781f49d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15863d9a276e5b75a29dec3da0e98cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42713147196a377764d8c759c143208.png)
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13-14高一·全国·课后作业
10 . 已知矩阵A=
,向量
=
.求向量
,使得A2
=
.
![](https://img.xkw.com/dksih/QBM/2014/12/2/1571908478935040/1571908484694016/STEM/a8d5ec7e5b8443d792b12f73c3586926.png)
![](https://img.xkw.com/dksih/QBM/2014/12/2/1571908478935040/1571908484694016/STEM/510be974f37643128ce60275d893846e.png)
![](https://img.xkw.com/dksih/QBM/2014/12/2/1571908478935040/1571908484694016/STEM/7aac76233bc44a9d939fcd01bfa78ac4.png)
![](https://img.xkw.com/dksih/QBM/2014/12/2/1571908478935040/1571908484694016/STEM/6c34684172be446494ad6d05bcdab1ea.png)
![](https://img.xkw.com/dksih/QBM/2014/12/2/1571908478935040/1571908484694016/STEM/6c34684172be446494ad6d05bcdab1ea.png)
![](https://img.xkw.com/dksih/QBM/2014/12/2/1571908478935040/1571908484694016/STEM/510be974f37643128ce60275d893846e.png)
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